Vulnerability · Published Nov 6, 2026 · Assigned by JetBrains
CVE-2026-123307
Medium 6.8
In plain English
A medium-severity server-side request forgery in IntelliJ IDEA from JetBrains. There are no confirmed reports of exploitation so far.
Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)–no EPSS score yet
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In JetBrains IntelliJ IDEA before 2026.3, 2026.2.4 unauthenticated connection to an arbitrary host via run configurations was possible
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| JetBrains | IntelliJ IDEA | 0 – before 2026.3, 2026.2.4 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N